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Ensuring the continuous production of housing and communal services, forms quality indicators of the human environment. The strategic orientation of the municipal management system allows enterprises to adapt to changing market conditions. In order to ensure the successful functioning and development of the industry, the classification and assessment of the probability of occurrence of negative events is carried out., which are a manifestation of latent or real threat to the safety of the human environment. With t...

Shoot cultures of the essential oil bearing plant Artemisia alba Turra (Asteraceae) were studied with the aim to elaborate the effect of in vitro rooting on cytokinin (CK) conjugation and chloroplast architecture in vitro. For this purpose, two in vitro morphotypes were induced ? (1) the root developing morphotype on plant growth regulator-free as well as on auxin indole-3-butyric acid (IBA)-containing media and (2) the root suppressed morphotype, obtained by a combination of IBA with CK N6-benzyladenine (BA). End...

In this paper a new type of Ru-containing catalysts based hypercrosslinked polystyrene (HPS) is proposed for cellulose hydrolytic hydrogenation to increase the selectivity to sorbitol. Also, we report the development of Ru-containing magnetically recoverable catalysts for cellulose hydrogenolysis to low alcohols, EG and PG. The use of the 1.0% Ru/HPS MN-270 catalyst allows achieving the total sorbitol and mannitol yield about 50% (245 °C, 60 bar H2, 30 mL water, 600 rpm, 0.028 mmol Ru on 1 g cellulose, process dur...

The security of technical infrastructure in crisis situations can be divided into several areas that can affect its functions. The aim of this work was to focus on water infrastructure with regard to legal aspects set in the Czech Republic. Water is essential for economic growth, human health, and the environment. The main reason for the emergence of the crisis situation in parts of the water infrastructure is predominantly presence of a large amount of water (torrential rain, lightning flood, flood, increased wat...

Safety planning is an important part of the mechanism that helps overcome extraordinary events or crisis situations. A safety plan is a general planning document such as a crisis plan, emergency plan, flood plan, etc. that focuses on the safety of an area. The structures of individual safety plans are defined in various legal and methodological regulations in the Czech Republic. The content may include safety plans aimed at either preventing or responding to emergencies. Some safety plans have combined content and...

According to national forest statistics data of 2018, Picea abies occupies 18% of the forest area of Latvia. As a result of intensive forestry management a forest productivity and the diverse anthropogenic influences on forest ecosystems are significantly increased. During the life a growth of spruce young stands can be influenced not only by abiotic but also by various biotic and anthropogenic factors. An aim of the research was to analyze sanitary condition of the artificially regenerated young forest stands of ...

Climate change is defined as a significant difference between two mean climatic states, with substantial impact on the ecosystem. Extreme climatic events, such as higher temperatures, more intense precipitation, increased drought risk and duration as well as cyclones and flooding in coastal areas, are expected to increase in both frequency and intensity. One of the possible indicators of water stress is sap flow measurement. For this experiment were used the apple trees in Nove Zamky, Slovakia. On stem were instal...

Human losses in Europe are mostly associated with meteorological and climatological hazards such as heat waves, heavy precipitation, river floods, windstorms and landslides. Economic losses are most significant for the industry, transport and energy sectors. Highest economic losses and annual numbers of affected people are caused mainly by geophysical and hydrological disasters. Landslides are natural hazards that cause fatalities and significant economic losses in various parts of Europe. Heavy precipitation even...

The paper describes a new design of a directional coupler with four plug-in quarter-wave loops. Four loops increase the operating frequency band several times, but the area of the device also grows by two quarter-wave segments in length. It is not always possible to use such a large device area, for this reason, techniques are used to reduce the size of the device with minimal loss in its characteristics. Using miniaturization, which is the use of compact structures, it was possible to reduce the size of a quarter...

It is well known that the main purpose for all upscaling techniques related with homogenization of initial any heterogeneous property and substituting it with an effective value. Thus, the essence of upscaling is computing weighted average on the fine-grid to form coarse-grid considering representative elementary volume. The goal of this research work was experimental investigations of pore space distribution of carbonate rocks. Samples were collected from the Upper Permian ages core data. Samples bulk porosity we...

Research was performed using application of airborne laser scanning (ALS) data for the assessment of land use and land cover (LULC) changes, especially for the monitoring forest succession on abandoned farmland. ALS point clouds were used to confirm the progress of forest succession process at the analysed area, not only in terms to show the occupied area, but also to derives informations about the structure of vegetation ? growth of trees and shrubs. The part of Wieliczka district (Malopolskie Voivodship, South o...

Despite the widespread use of sedimentation in the industry and numerous scientific works in this field, all factors affecting the process of sedimentation are still not sufficiently recognized. The sedimentation of fine-grained suspension must often be supported by a flocculation process or by using a multiflux filling. The particles of the solid phase of the suspension after the addition of the flocculant have the tendency to flocculate to form larger agglomerates, and thus their falling speed increases due to t...

In this paper, we present the spatial distribution of sedimentological and geochemical characteristics of the bottom sediments of Vouliagmeni lake which is located in the SW Perachora peninsula extending into the eastern Gulf of Corinth, Greece. A total of nineteen (19) samples consisting of upper 1-2cm lake bottom sediments were collected and analyzed. Standard sedimentological analyses were carried out including grain size analysis and the measurement of calcium carbonate content (CaCO3), total organic carbon (T...

The American NASA Apollo missions to the lunar surface, between 1969 and 1972 greatly increased the knowledge of the Moon as well as that of our own Earth's age and origins. Part of the scientific research used geophysical techniques to help define the structure of the Moon, both deep and also regarding the near surface. One such experimentation that was carried out, on both Apollo 14 and Apollo 16, as part of the Apollo Lunar Seismic Experiment Package (ALSEP), was the Active Seismic Experiment (ASE). The ASE com...

The paper considers the problem of velocity model reconstruction of an elastic medium in the problem of monitoring the zones of underground nuclear explosions. The inverse problem can be solved with help of finding solutions for a set of forward geophysical problems. Main problem is to find the location coordinates and treat to find the characteristic size and shape of cavernous object in entire isotropic elastic media. To realize it the problem statement and the description of basic methods to perform full seismi...

The Apuseni Mountains are located in the western part of Romania and are limited to the west by the contact with Pannonian Depression and to the east by the Transylvanian Basin. Basically To the south Apuseni Mountains are bounded by the South Transylvanian Fault and in the northern part by the North Transylvanian Fault. Apuseni Mountains represents an isolated massif inside Carpathian arch, consisting of complex folds and thrust belts formed in Cretaceous period as results of interactions between multiples microp...

During the exploitation of offshore deposits, earthquakes of technogenic nature may occur. Currently working geodynamic systems on the Korchagin and Filanovsky platforms in the North Caspian Sea were created and deployed. In addition, since 2007, for several years, periodic monitoring of local seismicity at the Kravtsovskoye field in the Baltic Sea has been carried out. As a result of seismological monitoring, it was found the presence of earthquake epicenters in the oil production region on the D6 platform and th...

The efficiency of drilling and blasting works can be assessed in many ways, depending on the desired effect. The evaluation can be performed on the basis of the quality of the explosives used for rock extraction. On the other hand, the correct assessment should include the results of drilling and blasting works. One of the parameters that are commonly used in the quality evaluation of explosives is the in situ velocity of detonation measurement, which is a direct indicator of the efficiency of the utilised explosi...

The solving of the project of the Czech Republic Technology Agency TACR dedicated to microbial methane genesis in geological conditions of the Czech coal basins is under way from 2018. The target of the project is clean methodology of coal. The main attention of the 2018 research was devoted to the geological research of the brown and hard coal basins and to the selection of the optimum localities for sampling. This paper briefly summarises the geological situation of coal basins, stratigraphy of different coal se...

In recent years, research and development works have been carried out in our country to create a modification of the sprinkler machine ?Kuban-L? with a set of equipment for controlling the sprinkling height (including the surface one), which allows reducing the average rain intensity and reducing the loss of irrigation water for evaporation and demolition by the wind. There are a number of issues that need to be clarified, despite the large degree of this product?s development such as the distribution of the quali...

In this paper we describe the synthesis and characterization of nano-sized TiO2 particles supported on sepiolite fibres with sepiolite to TiO2 weight ratios of 30:70, using sepiolite from Korinthos, Greece. Sepiolite - TiO2 nanocomposites were prepared by deposition of anatase form of TiO2 on the sepiolite surfaces using a sol?gel method with titanium isopropoxide as a precursor under hydrothermal treatment at 180 °C. The characterization includes phase composition, particle morphology, while the physical properti...

Nowadays, modern technical solutions in various spheres of human activity from the opto-electronics up to nanobiotechnology are increasingly dependent on the level of technology. Applied research on nanomaterials plays a key role in the development of nanotechnologies. The nanostructured silicon is one of the materials attracting the special attention of researchers in various applied areas. A new and widely discussed application of nanostructured silicon is a possibility of their usage in the process of efficient...

This work is related to the analysis of two complicated pipeline sections (section «A» and section «B»). Rheological properties (hydrometer MARS?II Haake) of produced and transported fluids. Hydraulic calculation of the technological process of fluid transportation from the well sites to the oil collection system was performed. Hydraulic modeling carried out with the help of PIPESIM software. The input data for process modeling were the results of investigations of rheological properties of transported fluids and ...

The aim of the work is to achieve a successful replacement of the ribbed heat exchanger (evaporator) for later simulation of the loop thermosiphon performance for cooling the electrotechnical box. The Ansys CFD program will be used for simulation, which needs the simplest network for correct and optimal calculations. Because of the complexity and the large number of cells in the ribbed exchanger, there is just a replacement model. A porous model evaporator will be used as a replacement. For this purpose, several p...

The problems of meteorological (wind) loads modeling on high-rise structures are considered. Arising oscillations lead to technical risks and uncomfortable being in residential and office rooms of these buildings. Technogenic impacts from transport and construction work can also lead to the development of negative oscillatory processes in buildings. Models describing the reactions of the structures of a building to outer impacts transmitted through geophysical media are proposed. Using spectral methods, based on d...

It has been observed that during high carbon ferromanganese using South African ores, some practices do not find an easy answer from the theory and vice-versa. It has therefore become important to study under different reducing conditions what paths does the slag go through while forming during reduction in order to better understand its formation while higher manganese oxides are being reduced. The carbon monoxide gas amount and availability in a specific zone albeit its origin is influential and explanatory towa...

The topicality of this study: The corporate social responsibility (CSR) became a particularly topical issue in the field of entrepreneurship since Latvia has joined the European Union in 2004, as well as for Bulgaria as the country joining the EU. All business companies are asked to undertake the strategy of social responsibility and to adopt the principles of social responsibility. In the context of this study, a sustainability strategy is adjusted to the specific economic, social, environmental and cultural fact...

In a world faced with the twin challenges of increasing urbanization and climate change, it is paramount to re-think cities so that they are able to face the pressures these changes will bring. Smart Green City goes one step beyond smart cities and is committed to caring for the environment. The Smart City, undoubtedly, has many advantages, and the implementation of all the technology associated with it is almost immediate. However, there is another emerging concept that, although it has less relevance, is also ve...

World Economic Development in the Last Quarter of the 20th century has been marked by several major processes, which have been clearly expressed in spatial projection at global, regional and local levels. The active process of industrial restructuring, has grown into deindustrialization in a number of regions. The reasons for this were related to the depressing nature of a number of industries that, in changing economic conditions, failed to respond to the market trends. A number of demographic and social processe...

Traditionally, the rural areas are characterized by a lower level of social sphere development, a limited range of services offered, difficult access to part of the population, etc. The demographic resources of these territories have specific features and require target development policies that will limit the depopulation of the rural areas. The social entrepreneurship is seen as a mechanism for solving social problems in rural areas and social enterprises are seen as a way to promote the active integration of vu...

For the construction of alternative and sustainable cities of the future, due attention should be paid to the study of the socio-economic and political issues that result from the development of globalization processes. On the other hand, smart and sustainable cities of the future are the challenge of the 21st century faced by the local authorities of the cities and regions of the European Union, as regional imbalances must be reduced by discussing cohesion issues. The process of building and managing alternative ...

Regular measurement of rock deformation processes makes it possible to make judgments about the nature of the deformations of the Earth's crust, as well as the likely precursors of earthquakes near the area where these data are obtained. Therefore, the continuous operation of measuring devices that record such deformations is extremely important. When measuring by laser methods in a normal atmosphere, the distance of measurements can be significant, up to 25 meters and higher. The disadvantage of such measurements...

Soil contamination is one of the most serious environmental problems. The aim of this study was to assess the level of contamination of soil by hazardous metals in 5 regions of Slovakia. Overall 152 samples (soil + plant) were collected from 76 sampling sites in investigated regions. In all samples contents of Zn, Cu, Ni, Pb and Cd were determined. In soil samples the total contents of risky elements in extracts by aqua regia as well as contents of bioavailable forms in extracts by NH4NO3 (c=1 mol/L) were determin...

Soil degradation, characterized by decline in quality, decreases ecosystem goods and services, and is a major constraint for further agricultural, including food, production. In addition, soil degradation caused by human activities, especially agriculture, contributes to climate change. The need to ensure a sustainable use of soils is outlined by the European Union (EU) Soil Thematic Strategy, as well as related legislation. This requires the prevention to further soil degradation and the preservation of its funct...

Both the United Kingdom as well as Czech Republic have seen increased impacts due to flooding in recent years. Rural flooding is due to intense and heavy rainfall-runoff events. Runoff brings with it soil erosion and sediment transport, so called ?muddy floods,? which causes serious onsite and offsite damages in the landscape or even in settlement area and infrastructure. Long-term observation and measurement is crucial step for understanding of complexity of processes involved in the generation of muddy floods an...

Environmental pollution by manganese is a significant problem for the Imereti region. The source of pollution is derived from manganese extraction quarry and ore processing plant. The purpose of the study was to investigate the concentration of manganese and other heavy metals in the soil, air and water. Samples were taken from the industrial area, and the chemical elements were identified in them using ICP-MS. The results showed that the concentration of manganese and some other metals exceed to the permissible l...

Landslides are mass movement processes with severe consequences on the environment and human communities, and their identification and mapping is an important step in analyzing, evaluating and managing their potential risk. The results obtained in identifying areas of landslide activity may vary depending on the data sources used. The present paper is testing the landslides inventory at the scale of a commune in the Moldavian Plateau, Eastern Romania, using two different data sources: orthorectified images (2010-2...

In the environment are present heavy metals such as Cu2+ and Pb2+. Metal-processing industries, mineral processing, the manufacturers of inorganic products and large scale coal users, such as public utilities are the major sources of heavy metal pollution. These heavy metals are toxic, are non-biodegradable, and they pose potentially lethal risks at high levels. Chemosorption is emerging as a potential alternative to the existing conventional technologies for the removal and/or recovery of heavy metal ions from aq...

Competition in air transport is growing and is a significant factor influencing airlines in the development of the strategy. In this article, we analyse the Bucharest-Tel-Aviv line which is operated by three airlines Tarom, EL AL and Blue Air, which are not allied and have no bilateral agreements. These companies are therefore direct competitors, and in our analysis, we are more closely examining their pricing policy over the reference period. By analysing the data we compared the possibilities of the aforemention...

The results of the field studies of heavy metals in snow cover presented in this work for urbanized territory of Almaty agglomeration first time. Seventy-five samples were collected during the period from February 5 to March 10, 2018 at 25 permanent monitoring sites. Samples of snow were analyzed for heavy metals (Cu, Zn, Pb, Cd) using ??S-7000 (Shimadzu). The obtained quantitative data were used to assess the nature of the spatial distribution of metals in the snow cover of the study area and based on them were p...

The monitoring of the construction behavior is one of the important activities carried out to determine the state of construction, subject to various natural and anthropogenic actions at a given time. In Romania, the activity of rockfill dams monitoring is regulated according to the importance category (A, B, C). The Rausor Dam is located downstream of the confluence of the River Rausor with the river Targului, which springs from the Iezer-Papusa Mountains. The dam is located at 7.5 km from the village of Leresti,...

Optimization is an iterative iterative process of improving the distributions of distributed computer applications obtained through the reengineering process so as to ensure the efficient allocation of resources for the implementation of the stages included in the reengineering. The article mentions how to choose each new goal and studies the model already implemented to start the project. It starts from the design of the existing application, and then applies the succession of stages specific to re-engineering. O...

The Lublin Coal Basin (LCB) is situated in the eastern part of Poland. Bituminous coals occur in Carboniferous Layers under the thin overburden built from Jurassic, Cretaceous and Neogene sediments. Most attractive seams (8 -12 to 18 balanced seams), with the mean thickness of about 1,3 ? 1,7 m (rarely under 2 ? 3 m) appear deep, most often at depth 750 ? 1000 m. They are cut by rare net of faults. Within the surface 1 200 km2 eleven deposits were documented, of which the only one is exploited. Total resources of ...

The purpose of our research is to develop and implement a long-term strategy for organizing independent work of students through the formation of students? autonomy culture in a foreign language setting. To achieve the goal set and verify the main provisions, we used the methods of theoretical and empirical research. Theoretical investigation included an analysis of pedagogical and psychological literature on the development of students' cognitive activity and learning autonomy in higher education. Empirical metho...

Global climate change and resources depletion are the main reasons why it is necessary to constantly seek innovative approaches to the green economy. The 21st century economy should be a "green" economy, represented by repeated and sustainable use of resources. At the same time, the impact of environmental problems has an increasing impact on the economy or health and the quality of life of the population. In Slovakia, one of the biggest environmental problems is mainly the issue of waste management. While the mun...

A great number of agricultural structures such as irrigation and drainage systems and anti-erosion facilities like bulk shafts, terraces, grassed run-off holding collectors, barrages, wind protection belts, etc. were put into operation during the last century in Bulgaria. The Agrarian Reform of the 1990-s posed unfavorable conditions for preservation and use of this valuable inheritance. Currently, small-sized, fragmented and scattered land use causes deterioration of land quality and infrastructure. The regulator...

Based on the exergetic analysis the paper analyses the conduct of a simple Linde cryogenic refrigeration cycle looking for its weaknesses and trying to find ways for operating or structural improvements. The exergetic analysis reveals that a major exergy destruction is due to heat transfer across a finite temperature difference in the recuperative heat exchanger. The optimization procedure points out that this exergy destruction reaches a minimum if the temperature difference between the high (hot) and low pressur...

The research was carried out in the ecosystems of sessile oak and beech within Vizantea forests of Experimental Forestry Base Vidra. There were located three plots of 1 ha each, where information on the biometric features of component trees was collected. The purpose of the research was to know the structure and functioning of the sessile oak and beech crops stands in the Curvature Carpathians, as a result of their current status, in the context of sustainable forest management and climate change over the last dec...

Stand structural diversity, defined as the diversity of trees in stands, can be indicative of overall biodiversity and habitat suitability, useful in forecasting stand growth, and provide within stand detail for forest inventories. The diversity analysis provides more detail to the traditional stand structure descriptions and enables the approach to stand management more consistent not only with the timber production, but also with other productions and values of the multi-benefit forest stands, and/or transformat...

The paper considers the model of formation of students? environmental and legal competence; gives a comparative analysis of the three components of the environmental and legal competence: motivational and values-based, cognitive and activity-based components; identifies the four groups of students: preschoolers aged 5-6 years, primary school students aged 7-10 years, middle school students aged 11-14 years, and senior pupils aged 15-18 years.The results of the survey, testing before and after the introduction of t...